Hoist



June 13, 1933. p R, FRANCIS 1,913,439

HOIST Filed Nov. 2a, 1930 n Mm J/1l Vf /V 7' 0R. 3 PM, R. v75159211.75,

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Patented June 13, 1933 i.

UNITEDSTTES i PAUL RFItANcIsor' Los ANGELES, cALIIoRNIA, AssIGNoR To ALLOY STEEL a METALS; coMPANYoF cALIroRNIA,"INC.,oF `Los ANGELES, cALIFoB-NIA, AcoaPonA'rIoN or `cALIFoRNIA d d j i Appiieatieii "flied Nmiember 2e, 193e. seriaiNa massifs,`

i j j This invention relatesto a hand `hoist in andeasily varying the gear ratios. n An object of myinvention is` to provide a novel handhoist, the franie of which rigidly bracedand in whichthedrum shaft d j d i the handle pinion S12 is removed from the j position shown in Figure 1 andissecured to actsas one of tliebraces.

`Anotherobject is to provide a Other objects, advantages, `and features of invention may appear from the accompany-` ing' drawing, the subjoined detailed descrip-` tion, and the appended claims. i

In thedra-wing:

Figure 1 isa longitudinal, sectional `view with other parts broken away. j

` Figure2 is an end view ofthe sainewith parts broken away to show interior co1istruc` tion .i i

Referring more particularly to the draw` ing, the hand hoist comprises `two parallel j l frame membersl-2J These frame members are rigidlyspaced and securedtogether by means of `a plurality of truss-rods 3. These i [drum shaft 4 is adjacent the top `of the frames 1-2 and acts as a brace for the top of the frame. d j

The shaft 1 is stationary and the drum 6 rotates thereon, the drum rotating upon the anti-friction bearings 5-e5.

j i A second gear 8,is j ournaled onthe frame 2, and preferably on a sleeve bearing 9. The j gear 8 is provided with an integral pinion k gear 10 which meshes with the gear 7.

`" A splined or toothed socket 11 is formed in the gear 8, and a handle pinion 12 fits in the splines 11. A handle 13 is secured to, or is integrally formed with the pinion 12 and said `pinion is rotated by means of said handle. A "stub shaft 14 is mounted in the gear 8 axially novel means 10 ofsecuring the end of the cable to the drum. 1

The drum 6 is provided with a gear 7 on one end thereof, "40 i said `gear being provided with externallteeth.

Wah the piniorilio, andthehandle pinion 12 lits on to the outer end ofthis shaft.` The gear is secured to the shaftin meshing `engagement, as showninl Figure 1, by means of a headed boltl which screws into the end of theshaftl/i." When it is desired to change the geary ratio,

the outerend of the drum shaft/1. j rllie outer end ofsaid shaft is reduced as at 16 so that the pinion `iitsthereon. The teeth"`on` the shaft 6 through the medium of theineshing j `The cable is secured to the drum 6 inthe following manner: A groove or recess `17 `is formed infthe drum 6 adjacent oneend there`- of. A U-bolt 18 `.fits inthe groove 17 and ex` tends through the side wallof the `drum 6. `The cable is attached to the U-bolt 18 and the i bolt is then securedto the drum, as shown in Figure 1. Due to the long recess or groove@ 17, there is no sharp kink or abrupt turn in the cable, "therefore, the cable" will wear longer` and will lay more smoothly on the druin"` A hand brake isprovidfed foi-the hoist which consistsof an arcuate "shoe 19 engage` ing the inner brake surface 28 ofthe gear 8. l The `shoe is moved intoengagement with"` the gearby means of an eccentric on the hand lever`21. Whentheliand lever 21 is rotated,` i theeccentric will` cause the arcuate brake shoe to Contact the gear 18, thus holding the load which may be `upon the drum 6. The lever 21 isformed with a trunnion 22 which is journaled in theframe 2. Aneccentrically" mountedfshaft` 23` projects from the trunnion brake shoe 19 to adjustably space said shoe from the strap 24,.. i

sisi

. Theqdrum 6 is,provided-withoil chambers j Having described my invention, I claim:

1. A hand hoist comprising two frame members, a plurality of brace rods secured in the frame members and extending therebetween, astationary drum shaft, meanssecuring the drum shaft to the frame members, a drum journaled on the stationary drum shaft, an external gear formed on the drum, a large driving gear journaled in one frame member, a pinion on said last named gear, said pinion meshing with the gear on the drum, a handle pinion, said large gear having splines therein to receive the handle pinion, a stub shaft in the large gear, said handle pinion being mounted on one end of the stub shaft, means detachably securing the handle pinion to the stub shaft, and a handle on the handle pinion.

2. Awhand hoist comprising two frame members, a plurality of brace rods secured in the frame members and extending therebetween, a stationary drum shaft, means securing the drum shaft to the frame members, a drum journaled on the stationary drum shaft, an external gear formed on the drum, a large driving gear journaled in one frame member, a pinion on said last named gear, saidpinion meshing with th-e gear on the drum, a handle pinion, said large gear having splines therein to receive the handle pinion, a stub shaft in the large gear, said handle pinion being mounted on one end of the stub shaft, means detacliably securing the handle pinion to the stub shaft, and a handle on the handle pinion, one end of said drum shaft being re* duced and adapted to receive said handle pinion whereby the handlepinion meshes with the large gear to increase the gear ratio of the hoist. A

3. A hand hoist comprising two frame members, a plurality of brace rods secured in the frame members ,and extending therebetween, a stationary drum shaft, means securing the drum shaft to thev frame members, adrum journaledon the stationary drum shaft, anexternal gear formed on the drum, a large driving gear journaled in one frame member, a `pinion on said last named gear, ,said pinion meshing with the gear on the drum, a handle pinion, said large gear having splines therein tov receive the handle pinion, -a Astub vshaft in the large "gear, said handle "pinion being mounted on the end of the stub shaft, means detachably securing the handle pinion tothe Stub shaft, a handle on the handle pinion,`

and meansy adjustably securing said handle to the handle pinion, one end of said drum shaft being reduced and adapted to receive Ysaid handle Yp'inionwhereby the handle pinion meshes with the large gear vto increase the gear ratio of the hoist. u

4. A hand hoist comprising two frame members, a plurality of brace rods secured in the frame members and extending therebetween. a stationary drum shaft, means sef curing the drum shaft to the frame members,

a drum mounted on the stationary drum shaft, anti-friction bearings between the shaft and the drum, said drum having oil recesses therein adjacent the anti-friction bearings, an external gear formed on the drum, a large driving gear journaled in one frame member, a pinion on said last named gear, said pinion meshing with the gear on the drum, a handle pinion, said large gear lhaving splines thereiny to receive the handle pinion, a stub shaft in the large gear, said handle pinion being mounted on one end of lthe stub shaft, means detachably securing the handle pinion to the stub shaft, and a handle on the handle pinion.

5. A handhoist comprising two frame members, a plurality of brace rods secured in the framemembers and extending therebetween, a stationary drum shaft, means securing the ldrum shaft to the frame members, a drum journa-led on the stationary drum shaft, an external gear formed on the drum, a large driving gear journaled in one frame member, a pinion on said last named gear, said pinion meshing with the gear on the drum, a handle pinion, said large gear hav ing splines therein to receive the handle pinion, a stub shaft in the large gear, said handle pinion being mounted on one end of the stub shaft, means detachably securing the han'dlepin'ion to the stub shaft, and a handle on the handle pinion, an arcuate brake shoe positioned in said large gear, said large gear having an internal brake surface formed therein, a hand lever, an eccentric o'n the hand lever, and means connecting the eccentric and the arcuate brake shoe whereby thc brake shoe is moved into engagement with the brake surfaces of the large gear. Y

In testimony whereof. I afix my signature.

PAUL n. FRANCIS. 

